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Once installed, the Water-Gate dam is capable of resisting all types of currents, strong winds and waves. We will advise you of the installation precautions that you should follow according to the prevailing weather conditions.

The seal increases with the height of flooding and the pressure of the liquid on the ground sheet. The leakage rate is less than 4 L / min per linear metre of smooth ground (concrete type). If this leakage rate is deemed too high it is possible to significantly reduce it. To do so, you have to spread a mastic or silicone seal (cartridge type) under the leading edge of the barrier, or any kind of natural product like treacle | viscous material, in order to increase the adhesion of the dam on the soil and fill micro cracks. The sealing depends on the soil surface state (the smoother the floor, the better sealing) and its draining effect (to be considered for long lasting floods). Leakage rate generally observed by type of ground, without extra sealing action. Concrete or new asphalt < damaged concrete < cobblestones < lawn < topsoil < sand < gravel < pebbles < 10 L / min

FAQ #11 | Should I use a supplement pump? What flow?Nicolas Klein2018-03-27T15:57:12+01:00

No anti-flood system is 100% waterproof. If the flooding lasts / in case of a long distance protection, it is strongly recommended to be equipped with water pumps to prevent the accumulation of water downstream of the dam. In general, provide a pumping capacity of 10 litres / minute (infiltration, rainwater discharge networks) for each linear meter of protection. Prefer several “small” pumps rather than a single high capacity one. It is also advisable to have a stand-alone generator.

FAQ #12 | What is the dam footprint?Nicolas Klein2018-03-27T15:57:22+01:00

For WA, WL and WT ranges, we use PVC coated polyester canvases. The main advantage of this type of canvas is its resistance to abrasion. In other words, if the barrier is dragged on the ground, the risk of breakage is minimal. For WP range, we use woven polyethylene fabric. This fabric also resists well to tearing but is a little more vulnerable to abrasion. The partitions for all barriers are manufactured with woven polyethylene fabric. The sewing thread used for all categories is 100% polyester. For the WL category, we use galvanized steel plates for the ballast weights.

The dam can be repaired easily in case of cuts / short lengths lacerations (a few centimeters). In the exceptional case of a tear while the dam is full of water, simply slide a piece of cloth/canvas inside the dam to close the gap (seal provided by the push of water on the canvas). For dry or in-water repair, a repair kit can be provided. It contains a two-component polyurethane adhesive for soft PVC Zodiac (750 ml), and a strip of 5 m x 2 m PVC canvas.

Our manufacturing process minimises waste production: all PE and PVC raw materials are reused in our low-lying dam models. Unused PE is collected by a local company and recycled along with glass to produce composite paving stones for roads.

Ability of the protection system to remain in place when the water level reaches the maximum protection level.

Installation & Dismantling Ease

1. Ability of the protection system to be implemented in case of emergency, without incident (state of the stored materials, labor, accessibility, tools, heavy equipments) 2. Quick to implement 3. Installation Cost 4. Cost of dismantling, decontamination and storage